* {
  margin: 0;
  padding: 0;
}
img {
  display: block;
}
.wrap {
  position: relative;
  width: 605px;
  height: 482px;
  margin: 0 auto;
}
.wrap > span {
  display: block;
  width: 30px;
  height: 40px;
  line-height: 40px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0);
  position: absolute;
  overflow: hidden;
}
.wrap > span:hover {
  color: #fff;
  background-color: rgb(0, 0, 0, 0.2);
  /* box-shadow: 0px 0px 3px black inset; */
}
.wrap > span:nth-of-type(1) {
  text-align: left;
  border-radius: 0 50% 50% 0;
  top: 222px;
  left: 5px;
}
.wrap > span:nth-of-type(2) {
  text-align: right;
  border-radius: 50% 0 0 50%;
  top: 222px;
  right: 20px;
}
.wrap > div {
  height: 10px;
  position: absolute;
  bottom: 20px;
  left: 30px;
}
.wrap > div > span {
  display: block;
  float: left;
  width: 10px;
  height: 10px;
  margin-right: 5px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.5);
}
.wrap > div > span:hover {
  background-color: rgba(255, 255, 255, 1);
}
